This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2009, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 719 | O'Connor, Lisa Kathryn | SA | Merit | Mathematical Applications | |
| 720 | Oliver, Amy Betty Lorraine | SA | Merit | Mathematical Applications | |
| 721 | Olsson, Kyra Jean | SA | Merit | English Studies | |
| 722 | Orchard, Sophie Amelia Giles | SA | Merit | Health Studies | |
| 723 | Otto, Madeleine Louise | SA | Merit | English Studies | |
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| 724 | Oulton, Jacinta Marie | SA | Merit | Psychology | |
| 725 | Overton, Luke Alexander | SA | Merit | Mathematical Applications | |
| 726 | Owen-Thomas, Joshua | SA | Merit | Physical Education | |
| 727 | Pacholski, Nicholas | SA | Merit | Systems and Control Products A | |
| 728 | Panayi-Motus, Alexandra Kate | SA | Merit | English Communications | |
| 729 | Pang, Sze Yaw | SA | Merit | English as Second Language Studies | |
| 730 | Pang, Sze Yaw | SA | Merit | Mathematical Studies | |
| 731 | Pang, Sze Yaw | SA | Merit | Specialist Mathematics | |
| 732 | Papadopoulos, Yanni Lewie | SA | Merit | Desktop Publishing | |
| 733 | Papadopoulos, Yanni Lewie | SA | Merit | Electronic Publishing | |
| 734 | Parisotto, Michael Peter | SA | Merit | Information Technology Studies | |
| 735 | Park, Nicole Renee | SA | Merit | English Communications | |
| 736 | Parsons, Charlie Stephen | SA | Merit | Mathematical Applications | |
| 737 | Partington, Vanessa | SA | Merit | Physics | |
| 738 | Patteson, Gabrielle | SA | Merit | Health, Recreation, and the Community | |
| 739 | Paul, Jacob Andrew | SA | Merit | Business Studies | |
| 740 | Peake, Rupert | SA | Merit | Tourism | |
| 741 | Pearce, Nicole Jessie | SA | Merit | Musicianship | |
| 742 | Pennino, Sofia | SA | Merit | Business Studies | |
| 743 | Peplow Ball, Ashleigh | Walford Anglican School for Girls | Hyde Park | Australian Student Prize | |